roundhouse

"The instructor explained the new math concept clearly to the students. "

"Archaeologists carefully dig in the dirt, looking for clues about past civilizations. "

"My brother exaggerated how difficult the math test was, saying it would take him hours to complete, when in reality he finished it in just 30 minutes. "

"The mechanic is guaranteeing the car repairs for one year. "

"The powerful locomotives pulled the long train of freight cars across the country. "

"The teacher's smile was a significant of approval for my hard work. "

"My sister is very helpful, especially when it comes to organizing things. "

"an ancient city  an ancient forest"

"The project consists of three main parts. "

"He suffered acute intoxication from the combined effects of several drugs."

"The teacher gave a demonstration of how to solve quadratic equations. "

"He regretted his words."